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Compose by: Naeem Arif Butt Hardware The tangible parts of the computer or physical parts of the computer are known as hardware. User can touch these parts od the computer. The process to build the hardware is known as Hardware manufacturing. Any newer part of the hardware is known as its Model. The person who develop the software is known as Hardware engineer. Electrical engineer, The Software and hardware are necessary to each other.

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Compose by: Naeem Arif Butt Types of the Software According to the working there are two types of the software Input Devices Output devices According to working 1 st we provide data through input devices and then get our results through output devices Computer Hardware Input devices Output Devices Software

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Compose by: Naeem Arif Butt Keyboard-Input Devices Keyboard is most frequently used input devices to provide data to CPU. Its just like old days type writer. We can provide Alphabets, Instructions, Numeric data through keyboard. QWERTY – is standard keyboard keys sequence upon keyboard. Key- a single button on keyboard. Total keys = 101 to 104 Key combination- some time a key performs 2 task. Total combinations = 256 The keyboard plugs into the computer with a round connector which known as PS/2 connector. The port which used to connect keyboard is PS/2 port or mini-Din connector.

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Compose by: Naeem Arif Butt Mouse-Input Devices Mouse is an input put device which used to enter the data the form of instruction. The positions of the mouse is present by a arrow which know as pointer. The following techniques allow you to use the mouse to input information: Point: Place the screen pointer at a specific location. Click: Press and release the mouse button. Drag: Hold down the mouse button and move the mouse. Double-click: Press and release the mouse button twice in quick succession. Right-click: Press the right mouse button. The connector and port of the mouse is same to keyboard but there color is green.

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Compose by: Naeem Arif Butt Scanner-Input Devices Provide the data in the form of graphics. Every thing that put on the glass of scanner display on monitor. Type of scanner OCR Scanners MICR Scanner Bar-code reader